Application of Spread Spectrum Crystal Oscillator in Driving Recorder

With the continuous development of automobile technology, driving recorders have become standard equipment in many vehicles. A driving recorder is a device installed on a vehicle to record video and audio during driving. It is mainly used to record evidence of traffic accidents, prevent theft, and provide driving assistance. Driving recorders usually have features such as loop recording, night vision, and GPS positioning, and are important tools for improving driving safety and determining liability.

As one of the core components of a dash cam, the crystal oscillator plays a key role in providing a stable clock signal, accurately recording time, and reducing electromagnetic interference. Its performance and quality directly affect the working stability and reliability of the dash cam. When choosing a suitable crystal oscillator solution, you should consider different performance requirements and costs.

Spread spectrum crystal oscillator is one of the common crystal oscillator solutions for current driving recorders, with the following advantages:

Reduced Electromagnetic Interference (EMI): Spread spectrum oscillators reduce peak electromagnetic radiation by spreading the clock frequency over a specific frequency range. This helps reduce the dashcam's interference with other electronic devices and ensures that its own electronic components are not affected by external interference.

Comply with electromagnetic compatibility (EMC) standards: Many countries and regions have strict regulations on electromagnetic radiation of electronic equipment. Using spread spectrum crystal oscillators can help dashcams meet these regulatory requirements and pass EMC tests smoothly.

Improve system stability: By reducing electromagnetic interference, spread spectrum crystal oscillators can improve the stability and reliability of the entire system and avoid system crashes or malfunctions caused by electromagnetic interference.

Improved audio and video quality: In dashcams, especially those involving audio and video recording, reducing electromagnetic interference can significantly improve the quality of recorded audio and video, avoiding the impact of noise and interference signals on the recording effect.

Based on the circuit design requirements of automotive electronic applications such as driving recorders, vehicle cameras, vehicle communication systems, entertainment systems, and car lights, we recommend the YXC programmable spread spectrum crystal oscillator - YSO171PS series.

The parameters of the YSO171PS series spread spectrum crystal oscillator are as follows:

Nominal frequency: 1-200MHz

Frequency error: ±25ppm

Working temperature: -40 ~ +85℃

Working voltage: 1.8V/2.5V/3.3V

Package size: 2520/3225/5032/7050

Output mode: CMOS

Features of the YSO171PS series include:

Fast delivery: Samples can be produced within 1 week, quickly responding to various design requirements of customers.

Frequency customization: Using PLL technology, any frequency within the frequency range can be customized, with wider selectivity.

Multiple options for spread spectrum width: ±0.25%, ±0.5%, ±1%, ±2% and other options are available.

Low power consumption: power consumption is as low as 3.5mA.

High temperature resistance: industrial temperature -40~+85℃ (supports wide temperature range of -40~+125℃).

Anti-interference: effectively reduce electromagnetic radiation power and reduce the impact of EMI electromagnetic interference.